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Found 2 results

  1. Hi! So my next DIY project is to stop using the standard air temp sensor, which I believe is actually a water temp sensor. I actually read on this forum that the GM sensor is a pretty good alternative with a resistor in parallel (using powerfc so can't modify resistor values) if you can plumb it into an area of the system that doesn't get so heat soaked. Thinking just after the intercooler which is actually cold piping even after driving for many miles; in comparison to the hot to touch air intake plenum. I'm planning to do this in the next few weeks, so I will post a walkthrough of this like I did with my AAC cleaning. This should help the tuning process as currently, after driving 50miles/80km, I'm having to retune slightly because the AFR is getting a little leaner than I want. It's only 1AFR leaner, so sitting at around 15.7 instead of 14.7, but I'm quite picky. The reason for the heat is because I'm running a single GT4294R turbocharger that's non-ceramic with no turbo blanket/wrapping on the down pipe. The fuel lines and right hand side of the bay is heat wrapped well but this isn't really helping things with the air intake which does tend to get hot. This brings me to my next subject: - What are the thoughts on wrapping and turbo blankets? I hear that wrapping can cause cracks but haven't really heard anything bad about the decent turbo blankets. DEi are supposedly good manufacturers of turbo blankets but quite expensive. If anyone has any comments or suggestions on a type of turbo blanket, I'd be massively grateful!
  2. Hey, I'm finding that after an hour or so of driving on a motorway at a steady 100km/h, the fuel ratios start leaning out from where I set them when at normal operating temperature after driving for 10miles (14.7), all the way up to 16+. This is the same behaviour that happens if I leave the car and get back in it again after it being switched on which leads me to believe it has something to do with the crappy air temperature sensor that is on the standard car. I am running twin map sensors but with the standard nissan temp sensor which I think I'm going to be changing. I'll write this up like I did with my AAC post. Is this behaviour happening because of heat soak or is it possible that there is something else happening? i.e. fuel temperature rising? I don't have a fuel temp sensor and it's not showing an option for specifying values in datalogit. I am thinking it is heat soak because I have a single turbo conversion with no turbo blanket.. yet, in combination with the crappy sensor. Any thoughts?
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